<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
    <style>
        *{
            margin: 0;
            padding: 0;
        }
        .box {
              width: 200px;
              height: 200px;
              border-radius: 50%;
              margin: 200px auto;
              background-color: powderblue;
              animation: move 5s linear infinite;
        }
        @keyframes move {
            0% {
                transform: translate(0,0);
            }
            25% {
                transform: translate(500px,0);
            }
            50% {
                transform: translate(500PX,500PX);
            }
            75% {
                transform: translate(0,500PX);
            }
            100% {
                transform: translate(0,0);
            }
        }
    </style>
</head>
<body>
    <div class="box"></div>
</body>
</html>